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Effect of substrate temperature on properties of diamond-like films deposited by combined DC impulse vacuum-arc method
Koszalin University of Technology, Poland .
Koszalin University of Technology, Poland .
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-4898-5115
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2837-3656
2013 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 236, 444-449 p.Article in journal (Refereed) Published
Abstract [en]

DLC thin films have been deposited using a combined DC and high power impulse vacuum-arc process. Hardness and adhesion of the obtained films deposited at different substrate temperature were studied using nanohardness testing and the scratch tester REVETEST (R). The bonding structure of as-deposited films was analyzed by Raman scattering and X-ray photoelectron spectroscopy. The results show that the substrate temperature is one of the main parameters influencing the sp(3)-to-sp(2) ratio of carbon atom bonds in the coatings, which in turn affects the films mechanical properties. XRD analysis shows that a CrxCy interfacial layer forms at 280 degrees C. which reduces the adhesion properties of the DLC coatings. High quality DLC coatings are obtained by control of the specimen temperature below 280 degrees C using a sensor that is in direct contact with the substrate.

Place, publisher, year, edition, pages
Elsevier , 2013. Vol. 236, 444-449 p.
Keyword [en]
DLC thin film; Temperature; Ratio of sp(3)/sp(2) bonds; Compressive stress; Raman and XPS spectroscopy; XRD analyze
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-104297DOI: 10.1016/j.surfcoat.2013.10.023ISI: 000329884300062OAI: oai:DiVA.org:liu-104297DiVA: diva2:697175
Available from: 2014-02-17 Created: 2014-02-14 Last updated: 2017-12-06

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Greczynski, GrzegorzHultman, Lars

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